【作者】 沈峰；

【导师】 钟胜奎； 仲兆准；

【作者基本信息】 苏州大学 ， 机械工程（专业学位）， 2013， 硕士

【摘要】 近年来,随着电力电子技术以及控制理论技术的高度发展,交流调速技术取得了突破性的进展。变频调速技术以其优异的调速性能、较高的功率因数、良好的节能效果、广泛的适用性等优点逐渐取代直流调速，被认为是最有前途的调速方式。但是传统的交流电机调速系统，通过单片机来生成控制信号，不仅编程繁琐，而且硬件电路连接复杂，使得开发成本不断增加。随着计算机技术的迅猛发展，一种全新的仪器概念-虚拟仪器应运而生，虚拟仪器有着诸多传统仪器不具备的优点，是未来仪器的发展方向。本课题旨在将变频调速技术与虚拟仪器技术相结合，鉴于虚拟仪器灵活、开放的特点，以及计算机强大的处理能力，用简洁易懂的图形化编程语言LabVIEW实现SPWM（Sinusoidal Pulse WidthModulation）信号发生以及SVPWM（Space Vector Pulse Width Modulation）信号发生，将生成的控制信号通过NI ELVIS原型开发板输出给智能功率模块，通过调节计算机软面板上的参数就可以方便地对智能功率模块的6个IGBT（Insulated Gate BipolarTransistor）开关的开断时间进行控制，也就实现了对三相异步电机转速的控制，以此来取代传统的通过单片机来实现信号发生的控制系统。经实验验证该系统稳定可靠，且大大降低了开发成本，缩短了开发周期，提高了系统的灵活性。因此具有良好的应用前景。更多还原

【Abstract】 In recent years, with the high development of power electronic technology and controltheory, AC (Alternating Current) speed-adjustable technology has made breakthroughprogress. Frequency control technology has replaced the DC (Direct Current) speed controlgradually with the excellent performance of speed regulation, higher power factor, goodenergy saving effect, widespread applicability and so on, and been considered as the mostpromising speed regulation mode. The traditional AC speed regulation system sendscontrol signal by SCM (Single Chip Microcomputer), not only tedious programming, butalso complex hardware circuit, these made the development cost increase gradually.With the rapid development of computer technology, a new instrumentconcept-virtual instrument has been born. Virtual instrument has more advantages than thetraditions, is the future direction. This subject aims to combine frequency controltechnology and virtual instrument technology, In view of the flexibility and opennesscharacteristics of virtual instrument, strong processing capacity of computer, useLabVIEW the concise and easy to understand graphical programing language to realize theSPWM signal generation and SVPWM signal generation. The signals generated are outputto IPM (Intelligent Power Module) by NI ELVIS. Six IGBTs breaking time of IPM can becontrolled by regulate the parameters of computer soft panel. So the speed control ofthree-phase asynchronous motor can be realized, in order to replace the traditional controlsystem which outputs signals by SCM.The system is stable and reliable was verified, the cost of development is reducedgreatly, the cycle of development is shortened and the flexibility of system is improved.Therefore it has a good application prospect.更多还原